2269664881 has 27 divisors (see below), whose sum is σ = 2572549707. Its totient is φ = 2000922000.

The previous prime is 2269664869. The next prime is 2269664899. The reversal of 2269664881 is 1884669622.

The square root of 2269664881 is 47641.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 73805281 + 2195859600 = 8591^2 + 46860^2 .

It is not a de Polignac number, because 2269664881 - 2¹¹ = 2269662833 is a prime.

It is a super-2 number, since 2×2269664881² = 10302757344089488322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2269664801) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 31967076 + ... + 31967146.

Almost surely, 2^2269664881 is an apocalyptic number.

2269664881 is the 47641-st square number.

2269664881 is the 23821-st centered octagonal number.

It is an amenable number.

2269664881 is a deficient number, since it is larger than the sum of its proper divisors (302884826).

2269664881 is an frugal number, since it uses more digits than its factorization.

2269664881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 143 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The cubic root of 2269664881 is about 1314.1771526716.

The spelling of 2269664881 in words is "two billion, two hundred sixty-nine million, six hundred sixty-four thousand, eight hundred eighty-one".